The Palestinian militant group Islamic Jihad announced Sunday that it has sent suicide bombers to Iraq to help defend Baghdad, on the same day the organization took responsibility for a suicide attack in Israel that injured 30 bystanders.

Margaret Warner discusses the civilian and military roles in war planning with retired Army General George Joulwan, who was Supreme Allied Commander of NATO forces from 1993 to 1997; Richard Kohn, professor at the University of North Carolina at Chapel…